Pull-socket switch.



F. BARR.

PULL SOCKET SWITCH, AIPPLIGATION FILED JULY 20, 1911.

1,079,740, Patented Nov. 25, 1913.

WITNESSES I 18 l/WENTOR l fed era'c Barr 4. 6 M

EREIDERIC BARR, OF NEW YORK, N. Y.

" PULL-SOCKET SWITCH.

Specification of Letters ratent.

Patented Nov. 25, 1913.

Application filed July 20, 1311. Serial No. 6339;522

To all whom it may concern: Be it known that I, Funnamo BARR, a citizen of the United States, andresident of New York, in the county of Kings and State of New York, have invented certain new and useful Im rovements in Pull-Socket Switches, of which the following is a specifi-' cation.

My invention relates to switches for incandes'cent lamp sockets and particularly the chain guide construction.

The object is to completely insulate the operating cord or f chain as it is commonly termed.

Another object is to provide a special guide for the chain at the point where 1t passes through the socket shell which guide is not attached either to the socket or 'to the shell but may be readily assembled with the socket and shell and-readily-separated therefrom'when desired.

Another object is to prevent relative movement of the socket, the chain guide and the shell. i

In the preferred form of the invention the switch parts are carried by. an insulating block formed in two parts with a channel extending around one side between the parts for the operating chain. The removable chain guide has a bell which extends through the shell and a base or anchor plate which -fits between the insulating block and the shell without being attached to either memher. The insulating blpck has a lugprojecting into a slot in the shell to prevent relative rotation and the base plate of the chain guide-has fingers loosely embracing the lug.

Figure 1, 1s a sectional view of the casing orshell showing the switch block, operating chain and guide in side elevation; Fig. 2, is a front view of thecompletesocket showing the parts of the interior dotted. Fig. 3, 1s a plan view, the cap of the shell being removed. Fig. 4c is a plan and sectional view iin th plane of the line X, X of Fig. 1. Fig.

v 5, isa' rear perspective view of the chain guide! Fig.- 6, is a fragmentary side view provided with lugs for securing ltto the shell. Fig. 7, is a rear view of the chain guide construction of Fig. 6. Fig. 8, is a frontview of a socket with another modification of the chain guide. Fig. 9., isa rear view of the chain guide of Fi 8 enlarged. Fig. 10, is a sectional view oi the same on the plane of the line Y, Y of Fig. 9.

1 The insulating block for carrying the stationary'switch contact or contacts as the 4 case may be (not shown) is formed in two parts 1 and 2. The upper part 1 has a flange 3 which extends around one side and the parts are secured together by means of screws 4;

' and 5 which pass through the flange 3.

Circuit terminals 6 and 7 are connected to the screws 4 and 5 1n recesses 1n the upper porcelam 1. I use the term porcelain herein as a generic term covering the porcelain or equivalent insulating material.

The lamp terminals 8 and 9 are suitably secured to the lower porcelain 2 and may be of any suitable shape and arrangement.

A rotating switch member of any suitable type (not shown) is carried by the rotatable insulating disk 10 which is mounted on the spindle 11. This disk 10 substantially fills the recess formed by the flange 3 and the upper and'lower porcelain members,

The shapes of the upper and lower porcelain members, the flange 3 and the disk 10 are such as to leave a curved channel 12 whose upper and lower walls are formed respectively by the upper and lower porcelain. Its inner Wall is formed by the periphery of the insulating disk 10 and the end walls are formed by the shoulders ,13 and 14 of the flange 3.

A lever 15 having ratchet teeth 16 to cooperate with the insulating disk 10 which carries the rotating switch member is mounted to oscillate about the axis of the spindlev 11. A spring 17 tends to hold the operating lever 15 in the position shown in Fig. 4

Where it presses against the shoulder 15.

The operating cord or chain 18 has one end securedto the lever 15 and the lever and chain operate in'the curved channel 12 previously described. When the chain 18 is pulled the 'lever'15 is oscillated so as to rotate the insulating switch carrier 10 until the lever 15 strikes the insulating shoulder let. When the pull on the chain is released the spring 17 returns the lever and chain to the positions shown in Figs. 1 and 4:.

' The parts thus far' described are inclosedin a shell or casing consisting of the body 19 andthe cap 20 which are detachably connected together in any suitable manner, the

flange 21 fitting over the'upper end of the body 19. Insulating material for instance,

fiber 22 and 23'is provided-preferably in the shell to insulate it from the interior mech- 11o provided with a slot 27 in its upper edge toaccommodattj 'he guide tube 24:. The upper end of this slot is covered by the flange 21 when the parts of the shell are assembled.

. The base plate .25 is preferably curved so as to correspond with the shape of the outer walls of the cylindrical insulating members 1 and 2 and the inner wall of the fiber 22 inside the shell body 19. This plate 25 is prefrably made of sufficient size to bridge the channel r12 between the upper and lower flanges of the porcelain switch carrying block as shown in Fig. 1; When the parts are assembled as shown in Figs. l, 2,3 and 4 the chain guide is held rigidly by reason of the respective shapes and arrangements of the parts and without the necessity of securing' the, chain guide either to the switch carrying block or socket or to the inclosing casing or shell.

To prevent relative rotation of theswitch carrying block and the shell I provide a lug 28which projects from the upper porcelain 1 into the upper end of the slot 27 in the body of the shell. The operation of the switch and the screwing in of the lamp (not shown) will therefor not disturb the relative positions of the parts. The chain guide I base plate 25 is preferably cut away at 99 to allow for the lug 28 and provide fingers 30 and 31 to embrace the lug. The parts are. thus held securely against relative displacement without the expense of providing means for securing the chain guide either to the insulating block or the shell. This also reduces greatly the cost of assembling the parts. When thecap20 is'removed from the body 19 ot' the shell, the switch uieehanism and chain guide can be readily removed from the body of the shell. The button or knob 32 on the end of the chain 18 will then prevent the chain guide from falling ofi. If it is desired to test the switch when outof the casing the chain guide can be, headilypositioned against the outer wall (italic insulating block and held there by the finger or thumb while the chain is operated? g :7 s

In the modification shownv in Figs. 6 and 7 the base plate 35 of the chain guide has lugs 36 and 37 bent outwardly so as to fit on the outside of the shcll 38 while the base plate fits on the inside. This connects the chain guide to the shell as distinctive 'lroni simply locating the chain guide base in the space between the insulating block and the insulating fiber lining of the shell as previously described. In this construction however, the base plate is also reinforced by the presence of the insulating block so that the metal of which the base plate is formed can be quite thin.

In the modification shown in Figs. 8, 9 and 10 the bell portion 40 is turned downwardly and the base plate 41 has two lugs 42 and 43 which fit inside of the shell 44:

and two lugs 45 and 46 which fit outside of the shell. The metal of the base plate being very thin, the upper lug 45 may fit under the flange 17 of the cap as shown in F ig. S. In this way the flange of the cap reinforces the base plate.

The right to claim the specific constructions shown in Figs. 6 to 10 inclusive, is reserved for other applications.

-The subject matter of Figs. 1 to 5 inclusive has been divided out of my application #608,656 filed February 15th, 1911 and this application is a continuation of the former to that extent.

\Yhat I claim is:' p

1. In a pull socket. an insulating block formed of two parts with a channel around one side. an insulating carrier rotatably mounted between the upper and lower parts of the block, an operating lever, an operating chain connected to said operating lever and operating in said channel, a shell inclosing the block and lever. and a chain guide extending through said shell and having a base plate rcmovably held in place between said block and said shell without attachment to either said block or said shell.

In a pull socket. an insulating block having a channel around one side, an operating lever having one end extending into said channel. an operating chain connected to said lever and operating in said channel, a shell inclosiug said block and lever, and a chain guide extending through said shell and having a base plate ln'idging said channel and held rcinovably between said shell and said insulating blocl l v the relative shape of the parts without attachment to either said block or said shell.

3. In a pull socket, an insulating block having a channel around one side, an operating lever having one end extending into said channel, an operating chain connected to said lever and operating in said channel,

a shell iuclosiug said block and lever, and a chain guide extending through said shell and having a curved base plate part of which tits against the'outer wall of the insulating block and part of which fits against the shell without attaclnncnt to either said block or said shell.

4-. In a pull socket switch. a block carrying the switch members and having a laterally projecting lug, a shell inclosing said block and switch llltllll)tl.-. cousistine of a said slot;

shell having 'a slot in one edge into which extending below the edge of the cap when.

side the shell.

said lu projects and a chain guide consisting of j late fitting between the insulating block anfi the shell ,and a bell projecting througli said slot, the re ative shape and location 0 the insulating; lock, the shell, the plate and tlie bell being'such that the chain guide is held in pliice without attachmentto the shell to the block when the parts are assembled.- l

6'. In a pullgsocket' switch, a block carrying the switch members' and having a laterall projecting-dug, a shel' l'inclosing said bl ck and switch niembersconsisting' of a body having a-slot into which said lug pro.- j'ects and a cap detachably secured to the body and a chain guide consisting of a plate located between said block and said shell and having fingers positioned by said lug and a bellgproject'ing through said slot.

.7. In a {pull socket switch, an insulating block having a ugyan inclosingshell having a slot into which said lug projects, a chain guide bell projecting through said slot and an anchor plate secured to the bell in 8. In a pull socket switch, a shell formed in two parts, a body 'anda cap detachably secured together, said body having a slot the partsane assembled, a cylindrical inxs ulgting block substantially fitting said shell carrying the. switch parts, a chain guide cdilsisting of alboll projecting through said slot in said shell and a curved anchor plate secured to said bell and fitting snuglyg in theishell between the cylindrical insulatiiig block and the shell biit independent of the block when the shell is removed-and means for preventing, relative rotation of said bell and block;

9. In a pull socket, a switch carrying block, a shell inclos'ing said block and .a chain guide having a base plate removably held between said" block and said shell and preventing said block from of said shell. k

10. In a pull socket ga switch carrying block, ashell inclosing'said block andra rotating inside chain guide havin a. base plate removablyheld between said. lock and said shell and a lug projecting from said blockinto on gagement withsaidjshell; to prevent its rotation. i f H 11. In a pulls ocket, a switch can ing block, a shell inclosingsaid block, ac ain guide having a base plate removabl held between said block and said shell an a lug A means independent of said chain guide for projecting from-said block through said plate. I V j t 12. In a pull socket, a shell body having a slot, a removable chain uide having a bell extending through said 5 0t and a. base plate conforming to the shape of the inside of said shell body adjacent said slot, and a switch block in said shell body shaped to hold said base-plate in position but removable from said shell body independently of said chain guide.

13. In a pullsocket, a shell body having a slot-, a removable'chain guide having a bell extending through said slot and'a base late {conforming to the shape of the lnsi e of said shell body adjacent said slot, and a switch block in said shell body shaped to hold said base plate in' )osition but removable from said shell ho y independently of said" chain guide and having a lug to prc-.,

vent-rotation of said block in said shell.

14.- In a'pull socket, a shell formed in. two parts, one of said parts having a slot, a switch-carrying bloc inclosed by said shell, and a chain guide consisting of a base plate fitting and held in place between said sw1tch block and said shell and abell projecting from said base-plate through said slot, said switch blockbeing removable from said-shell independently'of said chain guide.

FR-ED ERIO BARR. Witnesses:

IV. S. ALLYN, E. BRADFORD. 

